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Re: [Asrg] 2. Improving Blacklists and Reputation Services

2004-02-09 23:13:11
On Mon, Feb 09, 2004 at 01:09:38PM -0800, Hallam-Baker, Phillip wrote

You could do that, but you have to take account of the fact that the
filter is going to have lots of factors to apply in any case. For
example how reliable is the information source, does it talk about
every email sender or just some? Is it whitelist or blacklist?
  [...deletia...]
Yes, the big problem at the moment is that blacklists are not
accountable to any party. They tend to operate by attempting to ram
the arbitrary policies they choose down every sender's throat.

  Those two sections above are self-contradictory.  Blacklists are
accountable to MTA operators.  If MTA operators choose not to use a
specific lists, it won't be capable of forcing itself down their
throats.  I am not aware of any DNSbl that blacklists ISPs for the
simple reason that they don't use the DNSbl in question.  DNSbls *DO*
have reputations, which affect how many people are willing to use them.

I think it is better to have the sender say what they their sending
policy is. If they state outright 'I send unsolicited mail to anyone I
choose' then recipients get to say no. If they say 'I send only mail
to people who ask for it by quintuple opt-in' and someone catches
them spamming, well they chose the empirical test that they failled.

  The problem with that is that almost *EVERY* spammer^H^H^H^H^H^H^H
"legitimate marketer" makes that claim, so it's useless.  This would
allow them to take make one spam run, morph domain name, make another
spam run, repaet, rinse, lather.

-- 
Walter Dnes <waltdnes(_at_)waltdnes(_dot_)org>
Email users are divided into two classes;
1) Those who have effective spam-blocking
2) Those who wish they did

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